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ACI-ASTM CG12 Steel vs. SAE-AISI 94B17 Steel

Both ACI-ASTM CG12 steel and SAE-AISI 94B17 steel are iron alloys. They have 67% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CG12 steel and the bottom bar is SAE-AISI 94B17 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
130
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
25
Fatigue Strength, MPa 190
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 550
440
Tensile Strength: Yield (Proof), MPa 220
270

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1040
410
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
39
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 18
2.4
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.3
1.5
Embodied Energy, MJ/kg 48
20
Embodied Water, L/kg 160
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
96
Resilience: Unit (Modulus of Resilience), kJ/m3 120
200
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 20
16
Strength to Weight: Bending, points 19
16
Thermal Diffusivity, mm2/s 4.0
10
Thermal Shock Resistance, points 12
13

Alloy Composition

Boron (B), % 0
0.00050 to 0.0030
Carbon (C), % 0 to 0.12
0.15 to 0.2
Chromium (Cr), % 20 to 23
0.3 to 0.5
Iron (Fe), % 60.3 to 70
97.1 to 98.3
Manganese (Mn), % 0 to 1.5
0.75 to 1.0
Molybdenum (Mo), % 0
0.080 to 0.15
Nickel (Ni), % 10 to 13
0.3 to 0.6
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 2.0
0.15 to 0.35
Sulfur (S), % 0 to 0.040
0 to 0.040